Improvement in ventilating railway-cars



E. E. HARG-REAVES.

VENTILATING RAILWAY-CARS.

N0.174,811. Patented March 14, 1876 NPETERSy FHOTO-LITHOGRAPHER. WASHNGTON. U C.

. with a tight-fitting cover.

UNITED STATES PATENT GFEIcEa EDWARD E. HARGREAVES, OF SARNIA, CANADA.

IMPROVEMENT IN VENTILATING RAILWAY-cries.i

Speeitication forming part of Leiters Patent No. 174,811, dated March 14, 1876; application tiled February 9, 1876.

To all whom lt may concern:

Be it known that I, EDWARD E. HAR- GREAvEs, ot' Sarnia, in the county of Lambton and Province ot' Ontario, Canada, have invented an Improvement in Ventilating and Cooling Railway-Gars, ot' which the following is a specification:

My invention has for its object to ventilate a railway passenger-car by removing the air from within it by means-ot' an exhaust-fan located underneath it, driven by a belt from a pulley on one ot' the adjacent axles, and at the same time to cool the iniiuent currents ot' fresh air. The cooling ot the influent currents I prefer to accomplish by placing a tight box in one corner ot' the car, at each end thereof', through which box airtubes pass horizontally, communicating with the outer air through the side ot' the car, their inner ends opening into the body ot' the car. The box may be either tilled with a retrigerating mixture of'ice and salt, or the air-tubes may serve as a grate to support blocks ot' ice, so that in either case the air drawn into the car will be lowered in temperature as it passes through the tubes.

Figure 1 is a perspective view of a passenger-car, (without the seats,) portions ot the walls heilig broken away to show the internal arrangement. Figi), isa bottom plan, showing the exhaust-fan and pipes. Fig. 3 4is a crosssection ot' one ot' the air-tube chests at .r x. Fig. 4 is a cross-section ot' the same at y y. In the drawing, A represents the body ot' a passenger-car, beneath which is located an exhaust-fan, B, adapted to operate equally well when rotated in either direction, which fan is driven by a belt, U, from a pulley on one ot' the adjacent axles. D is the suctionpipe of the fan, from which two branch pipes, D D', lead to opposite sides of the car, rising through the tloo'r thereot', and extending inside the car nearly to the top', where it terminates in a T-branch, open at both ends, as shown. At each end ot' the car, in one corner thereof, there is placed a box, E, provided Through the ends ot' this box pass metallic air-tubes a, the several rowsv ot' which nearly till the box, the upper row serving as a grating to support blocks of ice placed in the box; or the latter may be filled with a mixture ot' ice and salt, or other refrigerating material, which Will surround the tubes and reduce them in temperature to a low degree. The outer ends ot' the tubes communicate. with the external atmosphere through the side ot1 the car, and should be provided with suitable screens to exclude dust and cinders, while the inner ends ofthe tubes communicate with the interior otl the car. When the car is in motion the action ot' the fan will exhaust the air from it, taking the heated impure air t'rom the upper part thereof, which is replaced by an equal volume ot' fresh air drawn in through the tubes a in the boxes E at each end, andl during hot weather the inuent air-currents can be cooled as described, so as to render travel a pleasure, it' nota luxury during the heated season'.

It is essential to the proper operation of this Ventilating apparatus that the doors and Windows ot' the car be kept closed, at least while the car is in motion. The time required to change the volume ot' air in the car may be regulatedby a valve in the main suction-pipe AD, which Valve ca-n be operated from the in- During cold Weather thisside ot' the car. arrangement t'or Ventilating the'ear 4must be changed, so as to take the foul air out ot' the i car at or near the Hoor, and means must be provided Jfor Warming the influent air-currents, which forms the subject-matter ot' a separate application for Letters Patent.

What I claim as my invention is- The means for Ventilating and cooling a railway-car, substantially as described, consisting ot' aretrigeratingbox at each side ot' a car, having rows ot' air-tubes passing through it and through the side ot' the car, in combination with an exhaust-fan and pipes for rcmoving or exhausting air from the upper part of said car, substantially as described.

EDWARD E. HARGEEAVES.

Witnesses:

H. S. SPRAGUE, EDWARD BARTHEL. 

